Embedded Files
Euler Line and Circle
Euler Line and Circle
Image of sketch in Geometer's Sketchpad
My hand sketch of the Euler Line and 9 Point Circle (circle drawn with only 6 points and center)
Student Work #1: Guided sketch with document camera
Student Work #2: Guided sketch with document camera
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Below in the attachments section is a 16 minute video lecture/walkthrough for constructing the Euler Line and Nine Point Circle using Geometer's Sketchpad. After downloading the video it may be necessary to download Apple QuickTime Player from here to play the video. This is a good way to learn how to use Geometer's Sketchpad with some context. It will cover the basics of the many tools in the program.
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Click on the image below. You will need the latest version of flash from here to play the video.
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Rotational Symmetry
This is a short video showing instructional use of Geometer's Sketchpad for Rotational Symmetry. Below, in the attachments section is the follow up assessment to check for understanding. The key point of this instruction is show examples and non-examples of rotational symmetry with three shapes: an equilateral triangle, a square, and a circle.
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